Support structure



FIG. 1 is a front, right side perspective view of a support structure of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a rear view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The broken lines depict portions of the support structure which form no part of the claimed design. 

CLAIM The ornamental design for a support structure, substantially as shown and described. 